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Semiconductors / Integrated Circuits

Frequency Control in a Low Voltage, Wide Tuning VCO Design at 2.4 GHz

A low voltage and wide tuning range voltage controlled oscillator (VCO) at 2.4 GHz is developed for ISM applications. A design procedure with the parasitics of packaged devices considered is offered. A VCO with a 200 MHz tuning range for less than 2 V ...
TECHNICAL FEATURE Frequency Control in a Low Voltage, Wide Tuning VCO Design at 2.4 GHz A low voltage and wide tuning range voltage controlled oscillator (VCO) at 2.4 GHz is developed for ISM applications. A design procedure with the parasitics of packaged devices considered is offered. A VCO with...
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Using APLAC to Simulate an RFIC Mixer

Use of the APLAC Design Suite to simulate integrated mixer circuitry
PRODUCT FEATURE ="BANNER"> Using APLAC to Simulate an RFIC Mixer APLAC Solutions Inc. Irving, TX Mixers are important RF elements in modern communication devices. As the size of devices is reduced, RF integration is increased. Using the APLAC Design Suite, integrated mixer circuitry can be simulated using the RFIC...
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Low Phase Noise Voltage Tunable Oscillators

Introduction to a new line of fast tuning, low phase noise voltage tunable oscillators
PRODUCT FEATURE Low Phase Noise Voltage Tunable Oscillators Paratek Columbia, MD Driven by the VCO market's insatiable need for lower phase noise and wider tuning ranges, a new line of voltage tunable oscillators (VTO) has been introduced with superior performance in these areas. The new VTOs operate at fundamental...
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Power Efficient MMIC Frequency Triplers

Presentation of an approach to optimize the power efficiency of an MMIC frequency tripler
TECHNICAL FEATURE Power Efficient MMIC Frequency Triplers The design of an efficient frequency tripler for an S-/X-band communications receiver is described. An approach for optimizing the tripler for best power efficiency is presented. The tripler topology consists of the harmonic generator circuit, a bandpass filter and an amplifier. A...
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SiGe Power Amplifier ICs with SWR Protection for Handset Applications

Detailed description of how SiGe technology is used to develop power amplifier ICs for wireless handset applications
TECHNICAL FEATURE SiGe Power Amplifier ICs with SWR Protection for Handset Applications Joe Pusl and Srikanth Sridharan IBM San Diego RFIC Design Center Encinitas, CA Philip Antognetti, David Helms, Anurag Nigam, James Griffiths, Kenneth Louie and Mark Doherty IBM Boston RFIC Design Center Lowell, MA In recent years there...
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On the Direct Conversion Receiver -- A Tutorial

A detailed look at the characteristics of the direct conversion receiver
TUTORIAL On the Direct Conversion Receiver -- A Tutorial Increased pressure for low power, small form factor, low cost and reduced bill of materials in such radio applications as mobile communications has driven academia and industry to resurrect the direct conversion receiver. Long abandoned in favor of the mature...
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